R. STAHL's 8544 series load and motor switches are used as Ex d load disconnect switches: They isolate and switch electric circuits in hazardous areas. They can also be used in non-hazardous areas. The innovative switch concept boasts simple, clear connections and an advanced contact system. A variety of terminals and contacts can be retrofitted. Three-pole and three-pole +N load disconnect switch with isolating functions that complies with IEC/EN 60947-4 • retrofittable: Pick-off terminal block, auxiliary contact, Ex i isolating element, N terminal, PE terminal, parallel drive, adaptor plate for connecting cable lugs • auxiliary contacts with lagging, leading or synchronised switching